Vulcanizing-mold.



J. K. WILLIAMS.

VULCANIZN G MOLD.

APPLICATION FILED JAN'ZO, i908.

Patented Dec. 29, 1908.

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Za/Www??? UNITED STATES @tlllllf il ifu'l" Ki WILLIAMS, OF AKRON, OHIO, ASSIGNOR OF ONE-HALF TVO THE WILLIAMS FOUNDRY ND MACHINE COMPANY, OF AKRON, OHIO, A CORQORATION OF OHIO.

No. eoe,1e1.

Specication oz' Letters Patent.

Patentes nec. '29, reos,

Application filed January 2G, 1368. Serial No. ll.

To 'all whom it moy'concern:

Be it -known that l, JonN K. WrLLrAMs, e citizen of the United States, residing vet Akron, in the county of Summit and State of oOhio, have invented nenr and useful lmprovements in VulceniZing-l/Iolds,ni which the' following is :i specification.

, This invention relates to molds ier containing articles, more especially vehicle tires i 1o Wholly or in part composed ofruhber, during the vulcenize-tion thereof, end in object thereof is to produce e mold. provided with o plurality of parte, seid parts comprising end end intermediate sections, said end sections lo being erich formed With grooves in one of the feces thereof so' constructed lthat when the two of them are clamped together the),T will constitute e complete mold, seid intermediste sections being so formed thet any number 2o thereof may be interposed between two end sections, each intermediate section being provided With grooves on their opposite faces so that When the intermediate sections ere in shutting reletion with eech other or with one of the end sections thev will form therewith complete molds, whereby the capacit; of the device may be extended indeinitely Within reesoneble limits by the interposition of the intermediate sections between suitable end or closing' sections. v

From the foregoing it "Will be seen that by the employment ci e pair of suitable end sections for closing'the top end the bottom of the mold,"se.id sections being provided With grooves in one face thereof, any number of units comprising intermediate sec-tions may be placed between 'seid end sections'for irrcreasing the capacity of the device, each interme-diete section, as before stated, hcving in its opposite feces grooves forming onelmli of e mold cavity of e proper shape and size to vulcenize the article to he introduced therein. f 1

Further objects of this invention is to form the sections With ineens whereby they may he brought into and seperated from abutting relation with each other to form when unitedon integral article and further provid.- ed with ineens for securely clamping them together.

Further objects of this invention is to so construct the sections that the thickness of` the metal surrounding vthe cavities ol the molds will be approximately equal in elldirections to the end that the heet required to vulcanize the article may rodiete to all ports of the mold cavities approximately equally so that all portions or" the tire will be` cured in\ substantially the seme length of time which would not be truc if portions of eo tl e metal differed in thickness, for the reason that the portions of the article adjacent the thickened portions i' the mold would not receive es intense o` heet es Would those portions which Were adjacent the thinner Wells of the mold.

Other edvonteges constituting objects of this invention will more full f appear in the subjoined description.

A practica-l embodiment of this invention is illustrated in the sccompenying drawings in which similar reference numerals indicate `like ports in the different figures.

Referring to the drevvings'lligure l is e plan vieu of o, moldiormed in accordance with thisv invention. Fig. 2 is e sectional view of o, mold such es is shown in Fig. 1 on line X of Fig. 3, and, llig. 3 is e view in side elevation, enlarged, of the mold shown in Fig. l with portions thereof broken sway to e0 better illustrate the interior construction thereof.

V Referring to the drawings in detail, l and 2 denote thetop and bottom mold sectionsA respectively. rlhese sections are identicalY 85,' und consist of metallic rings 'each lhaving in one fece en annuler groove 3 of e shape which it is desired to impart to the vulcanized erticle. These sections are provided With en outwardly-extending series of pairs of individuel lugs, the members of each pair being referred to by the numerals e and 5. The members l end 2 .ere further provided interiorlyv with e second series of -inwardlyrojecting pairs ol lugs, the members thereoi referred to by the numerals 5 and 7. The series of lugs l and 5 may or may not register with the series of lugs 6 and 7 but the pairs of eechseries of lugs on. the member 1 will be in vertical alinement with the corresponding series ol' lugs on the member 2. The members l end 2 are further provided interiorly with o third set of intrardlv-extending lugs, designated in the drawings bythe reference numeral 8 and each of the members of this 105 letter series of lugs is provided with either o l dovrei pin 9 or opening to receive e doWel pin.

ln order to make the v:ills of the members' l end 2 Which surround the grooves 3 thinner, the ou ter feces ci these members ere bcv sosie?.

eled as et 1() and 11 for a' purpose to be herel' y the reception of the stem of' zt core 1f-1 and thereby e'tl'ectuelly secure the letter in position.

Vv'hen it is desired to utilize this device us a single cavity mold, some article, es for exfemple, e rubber tire, which hes been. built up in'en unvulcanized condition on core ifi is leid in the groove 8 ot 'the member 2 with the stem of the core extending into the groove 13. The member 1 is then superposed on the member 2 in such e, mnner. that the dovv'cl pin 9 on the lug 8 oi the member 1 will ent-er e registering opening in the lug S oi" the member-2 therebv positioning the men'ibor 1 With respect to the member The two members 1 and 2 are then clamped together by means ol' bolts 1-5 provided uiitll heads 1o, nuts 17 and Washers 18. ihese bolts oi such e. length es to be capable ot beiney insorted between the members 41 end 5 or the series of lu s ro'ectinfr from the outer ne riphery of tne mold members 1 end 2 es well as between the members 6 and 7 of erich pair of lugs projecting interiorly from these niembers and by the use of the Washers 18 which extend lr orally sufficiently to enguge end lap these lugs, thet'vfo members 1 end 2 ere clamped together in the action of drawing up .the nuts 17. The mold thus set up is then placed in e vulcanizin heet until the articles contained in the mo d cavities have been roperly cured after Which the bolts fire reeased, the members seperste'd and the vul cenized article removed from the mold.

In order to make this device capable ot vulccnizing e plurality of articles simultaneously, I employ intermediate sections 19 de signed to be interposed between the sections 1 and 2. These sections 19 ere ringssiormed with grooves 2O in their opposite feces simin lar to the grooves 3 in the feces of the sec tions 1 and 2' and are adapted to register thereviith. They are also provided with suitable registering grooves 21 to receive the stems of the coes m assimiler manner to the i grooves 13 of tie sections 1 and 2 und lieve semi-circular grooves 22 to register with end form openings in connection with. the semicirculerwgroo'ves 12 of the sections 1 end 2. The inner and outer feces ot these interme diete sections are provided vrith eireumte entielly-fotmed grooves 23 and 241 for e purpose to be later described. Esch section 19 is provided with two cireumferentiellyerranged series oi lugs 25 end 26 one series ot which provided with proj ecting douel pins end tbe other with openings 29 to receive the pins ot en sdjec t section whereby the sections ine-y be posi ioned. Esch ot the sec tions 19 is further 'provided Witb. one or more series ol" outwerdlyextending lugs 27 so arranged tust the members oli each pair will be merly' opposite the top and bottom luces olI the members, ior s. purpose 'to be descril in setting up uy mold such as is illustrated in 3 oi the dren'ingsj tlieend section 'will be placed on ,x11-ome suitable support, end su article, such :is e 'tire .prwided with e cme, wiil be l W t in the groove 3. he first intermedmt section 19 e will then superposer. on .c section 2 end positioned by dovfel pin 28 entering the duivel pin opening in lug 8 of the member 2, thus the groove 21 to register With the ove T); the groove with the groove 3 und the groove 22 with the groove 12. The

.e in the upper the section e. second section 1%* u this bi up or mtermed 'ions 'it csriied on indehnitely. l.when

u ,sutileieint number et sections here neste(v the top i* end. section 1 is piece-d on theuppor ser on 19 end positioned with respect thereto by ineens of the doivel pins Q thereof f-iering the opening 29 in the lugs 26 oli' top-most intermediate section. e nest of molds is then cleirpeigl'togetherby means of bolts i5 as hes already been described with reference to e single ceif'ity mold.

'ille openings formed by the registering grooves 12 ol the sections 1 end 2 end 22 ot the secton 1) constitute overilow openings into which plus materiel caused by the expansion of the rubber under heet is permitted to escepe to relieve undue pressure on the device, but as this is common in the srt e further description thereof is believed tol leased., the end section 1 lifted oii' and the J:ire removed.

1n order to remove the intermediate sec tions end seperate them one `trom the other, experience lies shovfn that it is necessary to employ e ber which is inserted between the members of the .series of lugs 27 on adjacent sections for thepuruese el? prying tbe sections spart and these lugs 27 ere therefore formed on the exterior ol" the mold sections for this pmpose. 'i'he removal et the sections one 1from the other and the tires from 'the cavities on ediecent sections is carried on until the mold empty.

.bly forming the intermediete sections with iet soaisi vulcaniziiig agent, which is usually steam, to

act approximately uniformly ou the articles contained in the cavities of the mold. This vuniform heating of all portions of the tire substantially equally and simultaneously renders the use of this device extremely economical, for the reason that it 'will not be necessary to extend theVA time which the tire occupies -in the vulcanizing heatan extra length of time due to some portion of the tire not being reached effectively by the heating medium and this uniformity ofthe action of the vulcaniziiig agent, duc to the peculiar construction of the device, also prevents over-curing certain portions of the articles Which Wouid be more exposed to its action by reason of the thinness of the metal surrounding it than would some other portion which was protected or inciosed by a heavier Wall of the mold section. It will therefore be seen that the formation ofthe grooves and beveling of the end of the sections become an extremely important element of this invention for reasons already given bywhich satisfactory iesuits can be accomplished When dev'ce constructed in v accordance with this invention employed.

What I claim, is:FM

1. A vulcanizing mold coni of annular endsections hav; their opposing faces, and an intermediate section adapted to be interposed between said end sections, said intermediate ser-.tion having annular grooves in its opposite fares registering with the grooves in the facesof said end sections for forming mold cavities, said intermediate section provided with circumferential grooves in the outer and inner faces thereof, substantially as shown and describedrand for the' pur ose set forth.,

2. .jt/kvulcanizing mo d comprising a pair of annular end sections having grooves in their .opposing faces arranged to cooperate for forming mold cavities, each of said sections further provided with grooves arranged to form, .when said sectionsare in abutting relation, means for sustaining a core, and an arising a pair v grooves in .intermediate section arranged'to be interposed betWeen/said end sections, said intermediate section having a plurality of grooves in its opposite faces registering with the grooves in the faces of said endrsections, said intermediate section further provided with circumferential grooves in the outer and in ner faces thereof, substantially sli .described and for the purpose set forth.

8. A vulcanizing mold comprising pair of annular end sections having grooves in their op osing faces each provided with scries of aterally-extending pairs of lugs, an

intermediate section arranged tobe clamped l posits i between said end sections by means engaging said pairs of lugs, l"said intermediate section having grooves on their opposite faces regis-l tering With the grooves in the faces of said end sections, said intermediate section fur ther provided with circumferential grooves in the outer and inner faces thereof, substantially as shown 'and described and lfor the purpose set forth.

4. A vulcaniziiig mold comprising a pair of annular end sections having grooves in their opposing faces normally arranged to register and provided with a series of laterally-extending pairs of figa an intermediate section arranged to be interposed between said end sections, said intermediate section having grooves arranged to coperate with the grooves in the faces of said end sections, said. intermediate section fu ther provided with circumferential grooves in the outer and inner faces thereof, and boite engaging said lugs 'for clamping said sections together, substantially as shown and described and for the purpose set forth.

5. A vulcanizing mold comprising a pair of annular end sections having registering cavity-forming grooves in their opposing faces, a plurality of intermediate sections interposed between said end sections, each of said intermediate sections having grooves in their opposite faces adapted to register with the grooves in adjacent sections ainr with the grooves in said end sections, said -nterinediate sections further provided with circum` ferential grooves in the outer and inner faces thereof, and means for ositioning said sections, substantialiy as s own and .described and for the purpose set forth.

o. A vulcanizing mold comprising a pair of annular end sections having grooves in their opposing faces adapted to cooperate to form vmold cavities, a plurality of intermediate faces adapted to cooperate to .'ities, a plurality of intermediictions adapted to be interposed besaid end sections, each of said intenv sections having grooves in their o aces registering with the grooves in tion a scarsi adjacent sections and with the grooves in sal-d end sections, said intermediate sections provided with circumferential grooves in their outer and inner faces, each of said intermediate sections further provided with laterally-extending lugs, the lugs of each section Abeing spaced apart troni the lugs of' adjacent sections to permit oi' the insertion or" a separating tool therebetween, all oi said sections further provided with means for positioning them, substantially as shown and described and for the purpose set forth.

8. A vuicanizing moid comprising a pair 0i2 annular end sections having grooves in theiro posing faces and an intermediate Secapted to be interposed between said end sections, said intermediate section hav ing annular grooves in its opposite faces regfi istering with the grooves in the faces oi said end sections Jfor forming incid cavities, said intermediate section provided with a cir-4 cumferential groove in its outer face, subi stentiaily as shown and described and for the purpose set forth.

9. A vuloanizing mold comprising a pair ofannider end sections having grooves inV their opposing faces and an intermediate section adapted to be interposed between said end sectionsJ said'intern'iediate section, having annular grooves in its opposite faces registering with the grooves in the faces of said end sections for forming mold cavities, said intermediate section provided withl a circumferential groove in its inner face, substantiaily as shown and described and for the purpose set forth.

in testimony wher-eci" I have hereunto set my hand in presence of tivo subscribing Witnesses.

JHN K. WILLIAMS.

Nitnesses; A

C. E. HUMPHREY,

G-LENAR Fox. 

